The skid-mounted seawater reverse osmosis (SWRO) system is designed to efficiently remove dissolved salts and impurities from seawater under high salinity conditions.
It delivers stable permeate quality and reliable operation for industrial, municipal, and coastal water supply applications. Available in skid-mounted or containerized configuration for flexible deployment and transportation.
We provide engineering support including system selection guidance, feed water analysis suggestions, and configuration optimization based on project requirements.
Skid-Mounted Seawater Reverse Osmosis (SWRO) System
The skid-mounted SWRO system integrates pretreatment, high-pressure pumping, seawater RO membranes, and control units into a compact and modular skid.
It is engineered to handle high TDS seawater while maintaining stable recovery, salt rejection, and operational reliability under continuous duty. The system can be supplied as a skid-mounted package or integrated into standard ISO containers upon request, enabling fast deployment, ease of transport, and on-site installation.
Key Features
SWRO System Process Overview
Step 1 – Seawater Pretreatment
Raw seawater passes through pretreatment units to remove suspended solids and reduce fouling potential.
Step 2 – High-Pressure Pumping
Pretreated seawater is pressurized to overcome osmotic pressure required for seawater desalination.
Step 3 – Seawater Reverse Osmosis
Pressurized seawater flows through SWRO membrane modules, separating salts and dissolved solids from permeate water.
Step 4 – Permeate Collection
Desalinated permeate is collected and conveyed to storage or point-of-use systems.
Step 5 – Concentrate Discharge
Concentrated brine is discharged or managed according to site and environmental requirements.
Step 6 – CIP Cleaning
An integrated CIP loop supports periodic membrane cleaning to maintain stable performance and service life.
System Placement
• Water Source
Seawater, brackish-to-sea saline water, coastal intake
• Process Role
Core seawater desalination unit for TDS and salt reduction
• Downstream Use
Industrial utilities, municipal supply, potable water post-treatment
Typical Applications
• Seawater desalination for coastal industrial process water
• Offshore platform and marine utilities
• Municipal seawater treatment and potable water post-polish
• Remote island or resort water supply systems
• Desalination pretreatment for high-purity water systems
Technical Specifications
The following performance data is based on standard testing conditions. Actual performance may vary depending on feed water quality and operating parameters.
| Model | EET-SWRO-M50 | EET-SWRO-M100 | EET-SWRO-M200 | EET-SWRO-M300 | EET-SWRO-M500 |
| Capacity | 50 m3/d | 100 m3/d | 200 m3/d | 300 m3/d | 500 m3/d |
| Energy Recovery Device | X | X | √ | √ | √ |
| Feed Inlet Connection | DN40 | DN50 | DN80 | DN100 | DN125 |
| RO Permeate Outlet Connection | DN25 | DN32 | DN50 | DN65 | DN80 |
| RO Concentrate Outlet Connection | DN32 | DN40 | DN65 | DN80 | DN100 |
| Installed Power (kW) | 22 | 55 | 45 | 75 | 110 |
| L x W x H (in./ mm) | 236x94x110 / 6000x2400x2800 | 236x94x110 / 6000x2400x2800 | 236x94x110 / 6000x2400x2800 | 236x94x110 / 6000x2400x2800 | 472x94x110 / 12000x2400x2800 |
| Container Size (ft) | 20 | 20 | 20 | 30 | 40 |
| Operating Parameters | Recovery Rate: 35%-50% |
| Salt Rejection: 99% | |
| Design Temperature: 25°C | |
| Operating temperature: 15-40°C | |
| Feed Water TDS: < 35000 mg/l | |
| Minimum Feed Pressure: 2 bar |
| Materials | High-pressure Piping: 2205 |
| Low-pressure Piping: uPVC | |
| Skid Frame: SS316L | |
| Electric Control Cabinet: IP54 | |
| Pretreatment Filter Housing: FRP | |
| RO Pressure Vessel: FRP, 1000 psi (68 bar) |
| Optional Configurations | 1. Pretreatment Options: DAF / High-Gradient Magnetic Separation (HGMS) | |
| 2. Booster Pump System | 3. Product Water Transfer System | |
| 4. Post-treatment: Remineralization System | 5. Two-Year Spare Parts Kit | |
Note: Final configuration may vary based on feed water quality and site conditions.
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